Sheet material gluing machine



May

Filed Jan. 14, 1948 v R. MINKOW SHEET MATERIAL GLUING MACHINE 8 Sheets-Sheet 1 May 29, 1951 R. MINKCW 2,554,587

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May 29, 1951 R. MINKOW smas'r MATERIAL GLUING MACHINE 8 Sheets-Sheet 7 Filed Jan. 14, 1948 lli- R0519 M'nZUow 33 R. MINKOW SHEET MATERIAL GLUING MACHINE May 29, 1951 a SheetS Sheet s Filed,Jan. 14, 1948 3 Mrziow RoZe'rZ zgi zq w Patented May 29, 1951 UNITED S15 OFFICE SHEET MATERIAL GLUIN G MACHINE Robert Minkow, New York, N. Y.

Application January 14, 1948; Serial No. 2,270

(01. fil -51') 3. Claims.

This invention relates to gluing machines for applying glue to sheetmaterial, and is an iprovement over the machine embodied in my copending application, Serial No'-. 594,895, filed May-'21, 1945. for- Gluing Machine, and new Patent No. 145614388;

An object of this invention is toprovide a gluing machine for applying a film of glue to sheet material wherein the pressure or feeding rolls are connected to the table and are mounted so that they may be lifted up to expose the glue reservoir, so that the latter may befi lled, cleaned or the like.

Another object of this invention is to provide a machine of this kind including an improved mounting for the gluing roller and the film regulating roller sothat-theserollers can be removed and inserted without the use of tools.

A further object of this invention isto' provide a spring-pressed pressure roller disposed ad-- vanceof the feeding. roller or rollers with manually operable release means for moving said pressure or guide roller to released position-.-

A further object of this: invention isto provide a gluing machine which can beused with flexible sheet material such as: paper, leatherette or the like, or may be used with relatively stilt. material, such ascardboard corrugated board, wood or the like.

A further" object of this invention is to provide in a machine of this kind self-lubricating bearings for one or more: of the rollers so: that the Illbricant will. not. mix with. the glue.

A further object: of this invention" is to provide a machine of this kind which includesathermostatic heat regulating means in the glue reservoir which is disposed beneath the gluing. roller so as to maintain. the glue at the desired temperature within the gluing zone.

In the. drawings:

Figure 1 is-a detailed. side elevation ofagluing machine constructed according to an. embodiment of. this invention.

Figure 2. is a plan view of. the machine.

Figure. 3- is a plan of. the machine with the table and feeding rolls removed.

Figure 4 is a fragmentary sectional View taken on the line L- I of Figure 2'.

Figure 5 is a sectional View taken on the line 5--5- of Figures 1 and 2.

Figure 6 is afragmentary sectional view taken on the line 66- of Figure 2.

Figure 7 isa fragmentary sectional view takenon the line 11 of Figure 1.

Figure 8 is a detailed side elevation of thema-- chine opposite from that shown in Figure 1' and showing the table and. guard in dotted and up.- raised position.

Figure 9 is a fragmentary sectional: view taken on the line 9.-9 of Figure 2'.

Figure 101 is a fragmentary sectional view talren on the line |:Hl of Figure 1.

Figure 11 is a fragmentary sectional view taken on the line H.-Ii of Figure: 6;.

Figure 12 is a fragmentary bottom plan of the pointer: carried by the table- Figure 13 is a fragmentary sectional view taken on the line I3.l.3 of Figure 2'.

Figure 14 is a fragmentary-sectional view taken on the line 14-44 of Figure. 8a

Figure 1 is. a. fragmentary sectional view taken. substantially on the line [S -I5 of Figure 5*.

Figure 16 is a fragmentary sectional view of one of the self-lubricating bearings for the gluing roller.

Figure 17 is an end elevation of one of the selflubricating bearings.

Figure 18' is a fragmentary detailed side elevation of the rear portion of the machine with the feeding rollers and table in raised inoperative position.

Figure'1'9 is' a fragmentary longitudinal section of a modified form ofthis invention.

Figure 20 is a fragmentary vertical section. of another modification of this invention.

Figure 21 is a fragmentary sectional view taken on the line 2'i--2l of. Figure 20'.

Figure 22 is a fragmentary sectional View taken. on the line 22-22 of Figure 6.

Figure. 23 is a fragmentary sectional view taken, on the line 23'-23-of" Figure 6..

Referring to. the drawings the numeral 25; designates generally a base structure whichis: formed. of oppositev side members 26 and 21, opposite end members 28- and 2.! and a, bottom 30 which is fixed between the side and end mem-- here so as to thereby form a gluereservo-ir or well 31. The bottom member 3:11 is; formed witha downwardly offset bottom member 32 which. forms a. depressed well 33. and; the: well 33 communicatesi through an opening 34, as shown. in. Figure 15, with a. valve housing 35' which is; fixed by fastening. members 36 to the side: wall: 21.. The housing 35 has pivotally secured to: the lower side thereof a fiat valveplate 3.1: which. is mounted on a pivot bolt 3B and a spring-pressed bolt 39 extends through an arcuate slot 4w formed inthe valve plate 3 1 In this manner the valve plate 31' is constantly urged. upwardly tively, within which self-lubricating bearings 46 are adapted to removably engage. The bearings 46 are frictionally disposed in the slots 44' and 45 and each bearing 43, as shown in Figures 16 and 17, includes a cylindrical member 41 which is formed with a plurality of radially disposed openings 48 within which substantially solid lubricating plugs 49 are adapted to be mounted.

A gluing roller 50 is rotatably carried by the bearings45, the roller 55 includes outwardly extending trunnions 5I and 52 which are journalled in the bearings 45 and trunnion 5I has fixed to the outer end thereof a feed roller operating gear 53. The trunnion 52 has fixed thereto a relatively large spur gear 54 which meshes with a relatively small gear 55 which is carried by a pulley shaft 55 on which va'pulley 57 is fixedly secured. The pulley 5'! also has extending endwise and outwardly therefrom a cylindrical pulley operator 50 by means of which the pulley 51 may be manually rotated when it is desired to effect manual rotation in either direction of the gluing roller 50.and the feeding rollers to be hereinafter described.

The pulley 51 has engaging thereabout an endless belt 59 which also engages about a driving pulley 50 mounted on a motor shaft BI. A motor 62 is disposed in an inwardly offset rear portion '63 which is formed in the side wall 25 so that the motor 672 will besubstantially contained by the opposite sides of the base. A pair of side arms 64 v are disposed at the forward portion of the base and are pivotally mounted on pivot members 65 carried by plates 65 which are secured to the forward inner portions of the bars 42 and 43. The side bars 46 are of elongated configuration and have secured to the lower sides thereof a fiattable 5'1. The table 61 is adapted to be adjusted in substantially horizontal position by means of one or more pairs of table supporting bolts 68 which are threaded into the upper edges of the sides of the'base 25. The table 5? is formed at its rear end with a downwardly curved apron 69, as shown in Figure 8, and this apron engages over the downwardly curved rear end portion of a guard I which is fixed by fastening members II to one lengthwise edge of the table 61.

The guard I0 includes a horizontally disposed and outwardly extending upper portion I2 and a vertical side I3. The guard I3 also includes a rear arcuate guard member I4 which is hingedly secured to the main body of the guard by hinge means I5. The rear arcuate guard I4 engages partly about the pulley 51 and is formed with a relatively large opening I correlating with a similar opening I? through which the hand wheel 58 is adapted to project. The hinged or reararcuate guard member I4 is held in operative position by means of a bolt I8 which. is threaded into the adjacent side wall 25 and has a sleeve or spacer I9 engaging thereabout. If the main body of the guard I0 is raised with the upward swinging of the table and the side arms engage about an adjusting bolt 83.

or bars 64, the arcuate rear guard members I4 will move downwardly and rearwardly as shown in dotted lines in Figure 8. The side bars or arms 54 include upwardly projecting bearing guides 85 which are formed with a pair of openings 8I within which bearing members 82 are slidably mounted.

A pair of feeding and pressure rollers 83 mounted on shafts 84 are rotatably carried by the bearing members 82 and are spring pressed downwardly by means of springs 05 which The bolt 85 extends upwardly through a bushing 81 carried by a base block 88 which is secured to the upper a lock nut 90 is threaded on the upper end of the bolt 80 and is adapted to lock the bolt 89 in adjusted position.

The shafts 34 for the feed rollers 83 have secured to one end thereof spur gears 3| which mesh with an intermediate gear 32 rotatably mounted on a stud 93 which is fixed to the guide The intermediate gear 92 meshes with a second gear 94 and the latter meshes with the glue roller gear 53.

The bearing bars 43 at a point rearwardly from the slots 44 and are formed with upwardly opening slots. 95 within which blocks 96 are slidably mounted. The blocks for the doctor roller 9"! which extends across the base 25 and the trunnions 98 at the ends of the doctor roller 9? rotatably engage in bearing bushings 99 mounted in the bearing blocks 96. Each bearing block 36, as shown in Figures 6 and 22, includes an inner flange I00 slidably engaging against the inner side of the adjacent bar 43. In order to provide for quick removal of the bearing blocks 96 for removing the doctor roller, the bars 43 have secured thereto an inwardly projecting locking member [III which engages over the upper edge of the inner end of the flange I00. Each bearing block 96 has'secured thereto a rearwardly extending'threaded bolt I02 on which an adjusting wheel I03 is threadably mounted.

The bar 43 is formed with a cut-out I04 within which a bearing tensioning spring I05 engaging about the bolt I02 is adapted to be disposed. The rear end of the spring I05 bears against a washer I05 which is interposed between the spring I05 andthe rear end of the cut-out I04. The bar 43 is formed with an upwardly opening slot I01 through which the bolt I02 engages and an operator sleeve I08 is engaged in the slot I01 being interposed between the washer I00 and the forward end of the adjusting wheel I03.

The adjusting wheel I03 engages in an in-- wardly offset side wall portion I09 formed in the side wall 2'! and a similar offset portion Iii) formed in the side wall 26. There are two of these wheels I03 as shown in Figures 2 and 3.

The doctor roller 91 has secured to one trunnion 38 thereof a spur gear III which meshes with a spur gear II2 which is fixed to trunnion 52 of the gluing roller 50.

A guide roller H3 is rotatably carried by a pair of bearing blocks II4 which engage in guide slots 'Il5,formed in the bars 54. The bearing blocks II4 are adjusted in the slots or openings IIV5 by means of a threaded adjusting bolt H6 which extends through a bushing II'I having a base flange H8 which is secured by fastening members M9 to the bar 64 at the rear side of h sui l rmemh r 8.

, erably on. a radius of the gluing roller 50.

A. spring I is: disposed in: the bushing; II] and; bears at its lower or forward end. against the, bearing block H4 and at; its upper end against a shoulder I2I, formed in the upper rear end of the bushing 11.. An adjusting nut, I22 is threaded on the bolt H6 and. locked, in ad-. justed position by a lock; nut I23. The slot.- II5 is disposed on, an angle. to the vertical and pref- The guide roller H3. is adapted to be swung, upwardly and. rearwardly to released position by means of a. pair of. releasing lugs or levers. I24 which bear against the roller II3; adjacent the op* posite. ends thereof. The lug or lever I224 cludes. a. bushing I25 which. is; rotatable on an adjacent pressure roller stud such. as Ill and the bushing. I25 has extending. upwardly and. for.- wardly therefrom-1 an. arm I26. There are two of these adjusting arms I26 which are connected together by a connecting bar: I 2.1 In order to hold the. guide bar I I-3 in; released position, I

have provided a pair of hooks I28 which areloosely disposed about. the foremost. shaft or trunnion 34' for the feed rollers and the hook I28 includes a bill I29 adapted to engage over the connecting bar I21. When released position the hook I28 will be dependingly disposed at the opposite ends of the. foremost feeding roller 83. When the sheet is passed between the gluing roller 50. and the feeding rollers 83 the sheetv is stripped from the gluing roller by means of a plurality of stripping fingers I30 which are carried. by arms: I13I l'oosely disposed on a transversely extending supporting rod I32. The opposite ends of the supporting rod I32 are engaged in a selected notch I33 formed in the plate 65.

The stripping fingers I 30 are adapted to gravitatingly engage the periphery of the roller 50 so as to strip the sheet from the roller and permit this sheet to pass forwardly.

The gluing well or chamber 3I has mounted therein a thermostat I34 which is disposed below the gluing roller 50, as shown in Figure 4, and in substantially the vertical plane of the meeting point between the two rollers 50 and 91. The base 25 includes a heating chamber I35 below the bottom wall 30 and an insulated plate I36 is secured to the base 25 below the heating element (not shown) which is of conventional construction.

The heating element within the chamber I35 is connected to a rheostat I31 and a switch I38 is also connected to the rheostat I31 and the heating element. A switch I39 is disposed adjacent the switch I38 and is connected to the motor 62. A signal or pilot light I40 is disposed adjacent the rheostat I31 and a fuse MI is connected in the electric circuit associated with the rheostat I31. The rheostat I31, the two switches I38 and I 39, the signal light I40 and the fuse I4I are carried by a housing I42 which is fixed to the outer side of the side wall 21.

As shown in Figure 9, the arms I26 for the releasing means for the guide roller II3 are limited in their forward swinging to released position by stop pins I43 which are secured to the guide members B0 and project inwardly therefrom.

Referring now to Figure 19, there is disclosed a modified form of this invention which includes a gluing roller a. A single feeding roller 83a is disposed above the gluing roller 50a being rotatglznly carried by spring tensioned bearing blocks Referring now to Figure 20, there is disclosed a modified form of guide roller release wherein, a. releasing lever, generally designated as. I44, is roekably mounted on the; associated feed roller shaft. 84a. The. releasing lever I44 includes an arm I45. which is adapted. to engage the adjacent bearing block II4a for the guide; roller I;I3.m There are two of these releasing levers I144. which are connected together by means- 0f, a connecting bar I46 and, if desired, the holding hooks, such as the hooks I28 may be used to hold the releasing levers. I44 in released position.

When the table 61 is raised upwardly and. the bars 64. raised therewith carrying. the feedrollers 83 the guide members. are adapted to engage upwardly projecting stop bolts, I41 which are: secured to the forward portion ofthe base 25..

In theuse and" operation. of this machine the sheet material which is to be coated with. glue on at least. one side thereof is moved flatwise over the upper surface of the table 61. The guide rollers I-I.3. which may also constitute: pressure rollers: are adjusted: and. tensioned. to the desired degree: so that the lower side of the sheet will contact with the rotating gluing roller 50. The doctor roller 91 is adjusted and tensioned byrotailing the adjusting wheels I53 and these wheels includenumerals or graduations I48 which are correlated with a pointer I149. secured by fastening members I58 to the. lower side of the; table. 61. As the glued sheet passes beneath the feed ingrollers 83 these rollers will move the: sheet forwardly and. the stripping fingers I35; will strip he. new glued sheet from; theroller 50; When it is desired to fill the gluing well or reservoir 3I with glue, the table 61 is raised and the glue I poured into the well 3I from the top. In the event it is desired to remove the doctor roller 31, this can be accomplished by rotating the wheels I03 to release the tension on the springs I05 whereupon with the table 61 in raised position the hand wheels I03 may be pulled upwardly thereby turning the bearing blocks 96 and releasing these bearing blocks from the locking bars IOI. The gluing roller 50 may be readily removed by merely raising the table 61 and pulling the roller bodily upwardly with the selflubricating bearings 41.

I claim:

1. In a gluing machine, a base, a gluing roller rotatably carried by said base, a doctor roller correlated with said gluing roller, said base including a pair of horizontally disposed upwardly opening bearing guides, bearings for said doctor roller slidably engaging within said guides, an upwardly opening slot formed in said base in alignment with each of said bearing guides, bearing tensioning means disposed in each of said slots and engaging said bearings and said base, a pair of elongated feed and pressure roller supports pivoted above said base and formed with fiat lower edges adapted in the horizontal position thereof to overlie said bearing guides to prevent removal of said bearings therefrom whereby when said supports are pivoted upwardly said doctor roller, said bearings, and said tensioning means may be removed as a unit upwardly from said base.

2. In a gluing machine, a base, a, gluing roller rotatably carried by said base, a doctor roller correlated with said gluing roller, said base including a. pair of horizontally disposed upwardly opening bearing guides, bearings for said doctor roller slidably engaging within said guides for horizontal movement towards and away from said gluing roller, bearing tensioning means including a horizontally disposed bolt fixed to each of said bearings, upstanding portions on said base formed with an upwardly opening slot adapted to loosely receiv said bolt, spring means disposed between each of said bearings'and said upstanding portions for constantly urging said doctor roller towards said gluing roller, an adjusting member threadedly engaging each of said bolts and bearings against said upstanding portions for adjust ing the tension of said spring means, a' pair of elongated feed and pressure roller supports disposed above said base and pivotally connected thereto, said supports having flat lower edges adapted, when horizontally disposed, to overlie said bearing guides to prevent removal of said bearings therefrom whereby when said supports are pivoted upwardly said doctor roller, said bearings and said bearing tensioning means may be removed upwardly as a unit from said base.

3. In a gluing machine, a base including a pair of upstanding side walls, a gluing roller having the opposite ends thereof rotatably carried by said side walls, a doctor roller correlated with said gluing roller, a horizontally disposed upwardly opening bearing guide formed ineach of said side walls, a bearing block rotatablyli'carried by each of the opposite ends of said doctorfroller and adapted to slidably engage within' the adjacent bearing guide, a flange formed on the inner surface of each of said bearing blocks and adapted to slidably engage the inner surface of the adjacent side wall, an inwardly directed member fixed to the top of each of said side walls at one end of said bearing guides and adapted to overlie said flange to prevent upward movement of said bearings, bearing tensioning means disposed between said bearing blocks and said side walls and adapted to constantly urge said doctor roller towards said gluing roller, a pair of elongated feed and pressure roller supports disposed above said side walls and pivoted thereto and having fiat lower edges adapted in the horizontal position thereof, to overlie said bearing guides to prevent upward movement of said bearing blocks whereby when said supports are pivoted upwardly said bearing blocks and said tensioning means may be rocked upwardly and away from said inwardly directed members to permit removal of said doctor roller, said bearing blocks, and said tensioning means from said base as a unit.

ROBERT MINKOW.

REFERENCES CITED The following references are of record in the file of this patent:

, UNITED STATES PATENTS Number. 

